Im having the same problem if anyone would be willing to help. Ive added the “S” after http in the settings general area of wordpress, after doing this everything broke. The website is http://www.aedarby.com

the domain currently returns a ‘not resolved’ error, this might indicate that something is wrong in the DNS settings.If adding the ‘Sl’ is the only change you’ve made, you might be able to revert that and make the site address http:// again. We recommend to not change the site address manually, Really Simple SSL can do this for you (and make other necessary changes at the same time).

the www version of the site currently returns a ‘not resolved’ error, while the non-www domain returns an error 500. Both these issues have to be resolved. You can check in your DNS configuration if the www version points to the right IP address, or contact your hosting provider to let them check it for you.

In regards to the 500 error on the non-www domain, this can be caused by a number of things, often it is a plugin that is not working correctly. To determine this you can enable WordPress debug logging by adding the following to your wp-config.php file: